<template>
  <div class="login_container">
     
     
    <div class="login_box">
   
      <!-- 登陆表单区域 -->
      <el-form
        label-width="80px"
        ref="loginFormRef" 
        class="login_form"
        :model="formLogin"
        :rules="loginFormRules"
      >
        <!-- 头像区域 -->
        <div class="avatar_box">
         <img src="..\assets\img\三衍0.png"/>
       </div>
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="el-icon-user" v-model="formLogin.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" prefix-icon="el-icon-lock" show-password v-model="formLogin.password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetFrom">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      formLogin: {
        username: '',
        password: ''
      },
      // 表单验证
      loginFormRules: {
        //验证用户名是否合法
        username: [
          { required: true, message: '请输入登陆名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入登陆密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ] 
      }
    }
  },
  methods: {
    resetFrom() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(
          '/user/login',
          this.formLogin
        )

        if (!res.flag) {
          this.$message.error(res.message)
        } else {
          this.$message.success(res.message)
          window.sessionStorage.setItem('token', res.data)
          this.$router.push('/home')
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #86c0d1;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 270px;
  background-color: #fff;
  border-radius: 3%;
  position: absolute;
  left: 50%;
  top: 50%;
  opacity: 0.8;
  box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
  transform: translate(-50%, -50%);
}
 .login_box:hover {
    opacity: 1; //0-1 透明
  }

.avatar_box {
  height: 200;
  width: 300px;
  margin: auto;
  padding-left: 60px;
  img {
    width: 100%;
    height: 100%;
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0%;
  width: 100%;
  padding-right: 60px;
  box-sizing: border-box;
}
</style>
